Sökning: "ofdma"

Visar resultat 1 - 5 av 28 uppsatser innehållade ordet ofdma.

  1. 1. Undersökning av 802.11ax och förslag på implementation på skola

    M1-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Mårten Hedberg; [2021]
    Nyckelord :802.11ax; WIFI 6;

    Sammanfattning : Denna rapport innefattar en genomgång av den nya 802.11ax (WIFI6)-standarden med djupdykning och förklaringar på de nya funktionerna BSS Coloring, Target Wake Time och OFDMA med flera. LÄS MER

  3. 2. Performance of a Non-Orthogonal Multiple Access System with Full-duplex Relaying over Nakagami-m Fading

    Master-uppsats, Blekinge Tekniska Högskola/Fakulteten för datavetenskaper

    Författare :Rahul Chowdary Erpina; Viswakanth Reddy Gopireddy; [2021]
    Nyckelord :NOMA; Full Duplex Relaying; Nakagami-m Fading; Power domain NOMA; Successive Interference Cancellation; Half Duplex Relaying; OFDMA; Code domain-NOMA; Time domain-NOMA.;

    Sammanfattning : In our thesis work, we analyze the performance analysis of a power domain NonOrthogonal Multiple Access (NOMA) system in which the closer user acts as fullduplex relaying to forward the signal to farther user. Because Nakagami-m distribution is a generalized case including the two common fading distributions as specialcases: Rayleigh distribution (m=1), Rician distribution (m>1). LÄS MER

  4. 3. High-Performance Wireless Communications for Smart Grids

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Konstantina Roussou; [2020]
    Nyckelord :;

    Sammanfattning : The increased energy needs of today’s society, as well as the necessity for improved and more sustainable energy management impose the transition from the traditional power grids to the smart grids. Smart grids are enabled by the advances in Information and Communication technologies and automation. LÄS MER

  5. 4. FFT Implemention on FPGA for 5G Networks

    Master-uppsats, Linköpings universitet/Datorteknik

    Författare :Vlad Valentin Vasilica; [2019]
    Nyckelord :FFT; OFDMA; Physical design; FPGA; 5G; VHDL; CP-OFDMA; Radix-2; 2048-Point;

    Sammanfattning : The main goal of this thesis will be the design and implementation of a 2048-point FFT on an FPGA through the use of VHDL code.The FFT will use a butterfly Radix-2 architecture with focus on the comparison of the parameters between the system with different Worlengths, Coefficient Wordlengths and Symbol Error rates as well as different modulation types, comparing 64QAM and 256QAM for the 5Gsystem. LÄS MER

  7. 5. 4G LTE : eMBMS with MBSFN Service Simulation using OPNET

    Kandidat-uppsats, Mittuniversitetet/Avdelningen för informations- och kommunikationssystem

    Författare :Abdelrahman Walid; [2014]
    Nyckelord :3G; 3GPP; 4G; CoMP; CSI; CSI-IM; CSI-RS; eMBMS; eNB; EPC; EPS; E-UTRAN; GSM; HSPA; IGMP; IGRP; ITU-T; LTE; LTE-A; MAC; MBSC; MBSFN; MCE; MCS; MFN; MME; OFDM; OFDMA; OPNET; OSPF; PDN-GW; PDSCH; PMCH; PUCCH; PUSCH; QoS; SAE; SC-FDMA; S-GW; TDD; TD-SCMDA; UE; UTMS; WCDMA.;

    Sammanfattning : Long Term Evolution (LTE) known in the market as 4G LTE, it is an evolution of the GSM/UMTS standard. The overall aim of LTE was to provide a new radio access technology focusing on packet-switched data only. LTE has provided a new peak download rates, low data transfer latencies, and improved the support for mobility. LÄS MER